21528444

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 64350720

約数和(自身を除く): 42822276

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 41, 42, 47, 49, 57, 76, 82, 84, 94, 98, 114, 123, 133, 141, 147, 164, 188, 196, 228, 246, 266, 282, 287, 294, 329, 399, 492, 532, 564, 574, 588, 658, 779, 798, 861, 893, 931, 987, 1148, 1316, 1558, 1596, 1722, 1786, 1862, 1927, 1974, 2009, 2303, 2337, 2679, 2793, 3116, 3444, 3572, 3724, 3854, 3948, 4018, 4606, 4674, 5358, 5453, 5586, 5781, 6027, 6251, 6909, 7708, 8036, 9212, 9348, 10716, 10906, 11172, 11562, 12054, 12502, 13489, 13818, 16359, 18753, 21812, 23124, 24108, 25004, 26978, 27636, 32718, 36613, 37506, 38171, 40467, 43757, 53956, 65436, 73226, 75012, 76342, 80934, 87514, 94423, 109839, 114513, 131271, 146452, 152684, 161868, 175028, 188846, 219678, 229026, 256291, 262542, 283269, 377692, 439356, 458052, 512582, 525084, 566538, 768873, 1025164, 1133076, 1537746, 1794037, 3075492, 3588074, 5382111, 7176148, 10764222, 21528444]

約数ペア:

[(1, 21528444), (2, 10764222), (3, 7176148), (4, 5382111), (6, 3588074), (7, 3075492), (12, 1794037), (14, 1537746), (19, 1133076), (21, 1025164), (28, 768873), (38, 566538), (41, 525084), (42, 512582), (47, 458052), (49, 439356), (57, 377692), (76, 283269), (82, 262542), (84, 256291), (94, 229026), (98, 219678), (114, 188846), (123, 175028), (133, 161868), (141, 152684), (147, 146452), (164, 131271), (188, 114513), (196, 109839), (228, 94423), (246, 87514), (266, 80934), (282, 76342), (287, 75012), (294, 73226), (329, 65436), (399, 53956), (492, 43757), (532, 40467), (564, 38171), (574, 37506), (588, 36613), (658, 32718), (779, 27636), (798, 26978), (861, 25004), (893, 24108), (931, 23124), (987, 21812), (1148, 18753), (1316, 16359), (1558, 13818), (1596, 13489), (1722, 12502), (1786, 12054), (1862, 11562), (1927, 11172), (1974, 10906), (2009, 10716), (2303, 9348), (2337, 9212), (2679, 8036), (2793, 7708), (3116, 6909), (3444, 6251), (3572, 6027), (3724, 5781), (3854, 5586), (3948, 5453), (4018, 5358), (4606, 4674)]